La variación de energía cinetica de un cuerpo de 80 kg cuya velocidad de partida es 40 m/s y alcanza una velocidad de 70 m/s

  concave means having an outline or surface that curves inward like the interior of a circle or sphere. so the mirror curves inward.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

The object's initial distance above the groundthe object's initial velocity